"ISO 3166 is the International Standard for country codes and codes for their subdivisions. The purpose of ISO 3166 is to define internationally recognised codes of letters and/or numbers that we can use when we refer to countries and subdivisions. However, it does not define the names of countries – this information comes from United Nations sources (Terminology Bulletin Country Names and the Country and Region Codes for Statistical Use maintained by the United Nations Statistics Divisions)."

"Legislative analysts from the Congressional Research Service (CRS) closely examine the content of each bill and resolution and assign (index) as many Subject terms as are required to describe the measure's substance and effects. Beginning with the 111th Congress, all legislative measures are assigned at least one Subject term drawn from the terms presented at CRS Legislative Subject Terms. Searchable Subjects also include a large number of terms corresponding to geographic areas (foreign and domestic), U.S. government entities, and congressional committees shown in the list below."

"A taxonomy of Late Antique, Byzantine, and post-Byzantine sites, created as the basis for the places taxonomy for the collection management system AtoM@DO of the Image Collections and Fieldwork Archives of Dumbarton Oaks."